A portable seat is provided. The seat comprises a cushion device inside a pocket formed by an outer casing. A heat transfer device is carried by the cushion device and is inside the outer casing. The cushion may be reversed permitting the heat transfer device to be immediately adjacent the user or to provide at least a portion of the cushion between the heat transfer device and the user.
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3. A cushion device selectively usable as a seat, the cushion device including:
a seat portion having an exterior first casing with a first receptacle therein;
a back portion having a second exterior casing with a second receptacle therein;
a cushion member in each of the first and second receptacles;
an opening providing access to at least one of the first and second receptacles;
a retainer device in one of said first and second receptacles adapted to receive a heat transfer device far selectively retention therein;
at least one member connected to the seat and back portions to selectively retain the seat and back portions in a chair forming orientation and selectively allowing the seat and back portions to lie in a generally common plane to form a mattress; and
an extension portion comprising a third exterior casing with a third receptacle therein and a cushion member in the third receptacle, said extension portion being selectively movable to lie in said generally common plane.
1. A portable seat comprising:
a bottom portion including:
an exterior casing forming an interior pocket and having an elongate opening providing access to the pocket;
a cushion member contained within the pocket;
a cover in the interior pocket and at least partly surrounding the cushion member and selectively removable therewith from the interior pocket and adapted to removably retain a heat transfer device adjacent to the cushion member and in heat transfer relation to an exterior surface of the exterior casing, said cover at least partly defining a receptacle adapted to contain a heat transfer device therein and positioned between an exterior portion of the cover and an open weave member secured to and overlying a portion of the cover on a major face thereof with the receptacle being between the cover and the member, where said receptacle is reversible in position whereby the receptacle is selectively position at a location adjacent to the sitting surface or remote from the sitting surface with a portion of the cushion member between the heat transfer device and the sitting surface;
a second opening providing access to the receptacle for installation and removal of a heat transfer device; and
a back support portion connected to the bottom portion and the bottom portion has a sitting surface.
2. A seat as forth in
4. A device as set forth in
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Portable seats, such as stadium seats and collapsible metal frame chairs, are well known. Portable seats typically have fabric components with stadium seats generally comprising an outer fabric casing made of fabric material or the like having an internal pocket for containing a foam cushion member. Some stadium seats have only a base cushion and some further include a back to form a chair with a base or seat portion and a back portion. Generally, a seat with a back and base is foldable along a hinge line between the base and the back and can have fabric straps connecting the two components to keep the back generally at a seat forming position relative to the base and yet still be foldable. The straps may be adjustable to permit selecting the angle of the back relative to the base. The back may also be provided with an internal cushion member. Some seats have rigid stays extending between the front and rear or top and bottom of the side edges to help rigidify the structure against bending of the cushion members. Portable seats have also been provided with an accessory pouch for the storing of such things as drinks, magazines, books, etc. Collapsible metal frame seat have a fabric base and a fabric back which are supported by a series of interconnected and hinged hollow tubes.
Portable seats come in many sizes, shapes and styles. For example they may be foldable to make them more compact for storage and carriage. Some seats have internal cushion members and provide access to the interior for replacement of the cushion member. Portable seats have also been provided with means for providing heat to the user. Examples of these seats are disclosed in U.S. Pat. Nos. 4,604,987 and 4,573,447. Both of these patents disclose that the heater is positioned on the exterior of the seat in an exterior pouch with an opening for facilitating insertion and removal of the heating device. Such heating devices generally require a source of oxygen to effect an exothermic chemical reaction that produces the heat.
While the current seats are effective for their purpose, they do have certain drawbacks. One of the drawbacks for heatable seats is that the source of heat is positioned immediately adjacent to the user which, unless controlled in heat output may cause some discomfort to the user. Such positioning of the heat source can be problematic if the bulk of the produced heat is available for transfer to a user. Further, there is little if any protection for the heater device from environmental elements, for example, a damp or rainy environment. The amount of heat provided to the user is solely controlled by the components utilized to create the exothermic reaction. Additionally, such seats have only been structured for use as a seat limiting their applicability for additional uses.
Thus, there is a need for an improved seat device.
The present invention in one embodiment involves the provision of a portable seat comprising a base portion containing which may contain a cushion device adapted for sitting on by a user. The portable seat includes an outer casing defining an internal pocket in which the cushion device is received. A heat transfer device is positioned inside the casing and may be inside a cushion device pocket. The seat base has a top or sitting surface and a bottom or support surface. The heat transfer device may be reversed in position and may be positioned between the cushion and the sitting surface or positioned between the cushion and the support surface. The heat transfer device may also be positioned between two portions of the cushion device. The ability to position the heating device relative to a seat user permits regulation of the amount of heat transfer and hence the temperature to which the user is exposed. The pocket containing the cushion device and heat transfer device is at least partially open to the exterior of the pocket to allow oxygen or other needed component access to the heat transfer device. Control of air ingress into the internal pocket may be used to control operation of the heat transfer device. A back portion may be provided and connected to the base portion to form a chair type configuration. A collapsible frame may also be provided. The seat, with a base and back, may be oriented such that the base and the back lie in a generally common plane to form a mattress. The mattress may be usable under or within a sleeping bag or the like for user reclining while still providing the heat transfer device for comfort purposes. The seat of the present invention may also include a collapsible frame for supporting the base and back portions.
Like numbers utilized throughout the various Figures designate like or similar parts.
A portable seat is provided and is designated generally as 1. The seat 1, as illustrated includes a base portion 3 and a back portion 4 connected together. The seat 1 has an outer casing 5 enclosing cushion devices 6, 7 in the back 4 and base 3 respectively. Tension members 9 may be connected to and extend between the back 4 and base 3 to selectively fix their orientation relative to one another generally at right angles to form the seat 1. The seat 1 may have the base 3 and back 4 oriented at right angles, folded for carriage or storage, or extended as seen in
The base 3 includes the casing 5 with top and bottom panels 11, 12, side edges 13, a front edge 14 and rear edge 15. A pocket 17 (
The cushion device 7 preferably includes a cushion member 25 (
The cushion device 7 includes the cover 27. As shown, the cover 27 in one form of the invention, as seen in
The cushion device 7 may be positioned in one of a plurality of orientations within the pocket 17. For example, the heat transfer device 23 is contained within the pocket 17 inside of the casing 5 and may be positioned at the user engaging panel 11 for higher heat transfer at higher temperature or can be positioned adjacent the bottom panel 12 for reducing heat transfer rate to or from the user. Additionally, the heat transfer device 23 may be positioned in the receptacle 30 between portions of the cushion member 25 to provide further control of the rate of heat transfer to or from the user.
An optional feature of the present invention is the use of stays 40 positioned adjacent to side edges of the cushion member 25 to provide front to rear rigidity. The stays may be formed from a suitable resiliently deformable but relatively rigid material for example nylon or metal bars. The stays 40 may be secured to the cushion member 25, the cover 27 or retained in pockets (not shown).
The base or seat portion 3 of the seat 1 is preferably attached to the back portion 4. This can be done by simply using a portion 39 of the casing 5 as a hinge between the seat and back portions. Such a hinge arrangement provides an integral or monolithic structure allowing the base 3 and back 4 and the cushion devices 6, 7 to remain together and to be folded in overlying relation to form a compact structure for storage or carrying, or to be positioned at substantially 90° together to form a seat with a base and back. Further, by releasing the tension members 9, for example, at a quick disconnect buckle 41. The base 3 and back 4 may be positioned in substantially the same plane to form a mattress or the like (FIG. 6). As seen in
The back 4 may also be provided with rigidifying stays (not shown) similar to the stays 40.
As seen in
As seen in
In operation of the seat 1, a user may transport the seat to a place of use. The seat 1 may include only a base 3 or may comprise a back 4 connected to a base 3. A carry handle 57 (
The base 3A is hingedly connected to back 4A. In the illustrated structure, a pair of hinge members 83 is provided to hingedly connect the base 3A to the back 4A. As shown, each hinge 83 includes a hinge pin 85 connecting together two hinge arms 87, 88. Flanges 89A, 89B are provided on both the arms 87, 88 to form a generally L-shaped portion of each arm providing two faces 90A, 90B for engagement with the base 3A and back 4B respectively. Fasteners 91, such as screws, are used to secure the arm 87, 88 to the base 3 and back 4. The fasteners 91 pass through the casing 71, 78 and into the respective support member 70, 77. The arms 87 have legs 92 which receive a hinge pin 85 therethrough and have length sufficient to allow the base 3A and back 4A to overlie one another in generally parallel orientation when the set 1A is collapsed.
As seen in
The base 113 can be similar to the base 3 described above and can be made by having eyelets 126 attaching the base 113 to the frame 117. As shown, the base 113 includes a selectively openable front edge 131 which provides an elongate opening 133 providing access to an interior pocket 134. In order to assist in the use of seat 101, it is preferred that the cushion device 7 be of a very flexible material such as the foam described above or a polymeric fiberfill material such as polyester fibers to help provide cushioning and insulation. In this embodiment, the cushion device 7 would be generally constructed as described above including the pocket for the heat transfer device 23 and a pocket for foam or just described fiberfill. In an alternate construction, the pocket 134 in the base 113 may contain a heat transfer device 23 without the use of a cushion device 7. The means to selectively close and/or seal the opening 133 of the base 113 may be such as to limit or control the ingress and egress of air into and out of the pocket 134. The base 113 may also be provided with grommets like the grommets 95 described above in the lower panel 137. A heat transfer device 23 is retained within the pocket 134 between an upper panel 138 and the lower panel 137 and is retained therein by closing the opening 133 through the use of suitable closures such as hook and loop fasteners, a toothed zipper or a rib and groove arrangement as described above for the base 3.
Thus, there has been shown and described several embodiments of a portable seat. As is evident from the foregoing description, certain aspects of the present invention are not limited by the particular details of the examples illustrated herein and it is therefore contemplated that other modifications and applications, or equivalents thereof, will occur to those skilled in the art. Many changes, modifications, variations and other uses and applications of the present constructions will, however, become apparent to those skilled in the art after considering the specification and the accompanying drawings. All such changes, modifications, variations and other uses and applications which do not depart from the spirit and scope of the invention are deemed to be covered by the invention which is limited only by the claims which follow.
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